Thermo-electric cell.



No. 660,89. Patented Oct. 23, I900. E. F. YOST &. W. H. SMITH.

THERPHO ELECTRIC CELL.

(Application filed. June 28, 1900.)

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W w. 4mm

WITNESSES:

met.

ERNEST F. YOS'I AND YVILLIAM H. SMITH, OF NEW YORK, N. Y.

THERIViQ-ELECTRIC CELL.

SPECIFICATION forming part of Letters Patent No. 660,139, dated October 23, 1900.

Application filed June 23, 1900. Serial No. 21,903. (No model-l To all whm'n, it iii/a7 concern:

Be it known that we, ERNEST F. Yos'r and WILLIAM H. SMITH, of the borough of Brooklyn, city of New York, State of New York, have invented a new and useful Improvement in Thermo-Electric Cells, of which the following is a specification. I

()urinvention relates to an improved form of thermo-electric cell; and it consists in the construction thereof, as more particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical section on the line 1 1 of Fig. 2. Fig. 2 is a horizontal section on the line 2 2 of Fig. 1. Fig. 3 isa perspectiveview of the exterior shell and heating piece attached thereto.

Similar letters of reference indicate like parts.

A is a strip of electropositive metal, such as copper, bent in quadrangular shape and forming the part to which heat is applied. The shell B, also of electropositive metal, is bent at O and there directly united to the piece ,A by soldering, brazing, or otherwise. Said shell has two side arms D and E, here shown as formed integral with the shell. The side walls and arms of the shell are lined with insulating material F. Attached at its ends to the under side of the bent-over part 0 of the shell is a contact-piece G of corrugated electropositive metal, such as iron. The corrugations permit of the contraction and expansion of this piece under changes of temperature. mass H of any metal which will be electro negative to and which is not capable of attacking said piece G, such as antimony or antimony and zinc, and the interior of the shell is filled with a mass I of antimony and zinc and then a copper conducting-plate J and then a body of solder K.

L is a copper tube directly embedded in the mass of solder K.

N is a copper tube soldered in the wall of shell 13 and having its end received in that of tube L, an insulating-lining M being interposed.

When the cell is in operation, heat, as by a flame, is applied to the piece A, thus causing a difierence of electrical potential at the joint formed between the contact-piece G The piece G is embeddedin a and the surrounding body of electronegative metal. With this joint the tubeNis in electrical connection. Also during the operation a current of refrigerating fluid, such as water, is maintained through the tubes L N, thus cooling the joint between tube L and the inclosing metal, with which joint-tube L is in electrical connection. The tubes L N being insulated from one another serve as terminals for the cell.

The heating'flame may be applied to the interior of the receptacle A, the cell being then disposed in horizontal position, and where several cells are arranged one above another the pieces A unite to form a conducting-flue.

In another application for Letters Patent filed simultaneously herewith, Serial No. 21,902, (series of 1900,) we have broadly claimed a thermoelectric cell having means for conveying a current of refrigerating fluid through its interior, the general construction and arrangement of the tubes L N to act both "as conduit-s for the circulation of the refrigerating fluid and as circuit connections, the inclosing of the electropositive contact-piecein a metal which will not attack, and the construction, broadly, of a joint to be heated which will be self-compensating under variations of temperature, and therefore the foregoing features are not herein claimed.

\Ve clairn 1. In a thermo-electric cell, a heating-piece A in hollow polygonal form, substantially as described.

2. In a thermo-electric cell, a heating-piece A formed by bending a strip of metal in polygonal form, substantially as described.

3. In a t-hermo-electric cell, a body of electronegative metal, an outer covering of electropositive metal, and a contact-piece of electropositive metal embedded in said negative metal and electrically connected at its ends to said electropositive metal, substantially as described.

4. In a thermo-electric cell, a body of electronegative metal, an outer covering of electropositive metal and a corrugated contactpiece of electropositive metal embedded in said electronegative metal and electrically connected to said electropositive metal, substantially as described.

5. A thermo-electric cell containing amass metal electrically connecting said body and said tube, substantially as described.

ERNEST F. YOST. WILLIAM H. SMITH. Witnesses:

WM. H. SIEGMAN, I. A. VAN WART. 

